Add tether gun (#16430)

Content.Shared/Weapons/Misc/TetheredComponent.cs

@@ -0,0 +1,16 @@
+using Robust.Shared.GameStates;
+
+namespace Content.Shared.Weapons.Misc;
+
+/// <summary>
+/// Added to entities tethered by a tethergun.
+/// </summary>
+[RegisterComponent, NetworkedComponent, AutoGenerateComponentState]
+public sealed partial class TetheredComponent : Component
+{
+    [DataField("tetherer"), AutoNetworkedField]
+    public EntityUid Tetherer;
+
+    [ViewVariables(VVAccess.ReadWrite), DataField("originalAngularDamping"), AutoNetworkedField]
+    public float OriginalAngularDamping;
+}